Heat Transfers Review

Front

What is conduction?

Back

Conduction is the transfer of heat through direct contact between materials. It occurs when heat moves from a hotter object to a cooler one through physical touch.

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What is convection?

Back

Convection is the transfer of heat through the movement of fluids (liquids or gases). It occurs when warmer, less dense areas of a fluid rise and cooler, denser areas sink, creating a circulation pattern.

Front

What is radiation?

Back

Radiation is the transfer of heat in the form of electromagnetic waves. It does not require a medium to travel through, allowing heat to be transferred through empty space.

Front

Example of conduction in everyday life?

Back

An example of conduction is when you touch a hot stove and feel the heat transfer to your hand.

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Example of convection in everyday life?

Back

An example of convection is the way warm air rises in a room, causing cooler air to move in and create a circulation of air.

Front

Example of radiation in everyday life?

Back

An example of radiation is feeling the warmth of the sun on your skin, even when you are not in direct contact with it.

Front

How does a heating pad work?

Back

A heating pad works through conduction, transferring heat directly to the body when it is placed on the skin.

Front

How does a hot air balloon rise?

Back

A hot air balloon rises due to convection; the air inside the balloon is heated, becoming less dense than the cooler air outside, causing it to rise.

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What happens to chocolate when held in your hand?

Back

The chocolate melts due to conduction, as heat from your hand is transferred to the chocolate.

Front

What is the role of density in convection?

Back

Density plays a crucial role in convection; warmer fluids are less dense and rise, while cooler fluids are denser and sink, creating a cycle.